code: def reset(self):
      self._i = 0
      self._find_next()
  
file_path: whoosh/src/whoosh/query/qcolumns.py
imports: from whoosh.matching import ConstantScoreMatcher, NullMatcher, ReadTooFar
  from whoosh.query import Query
label_desc: Use image node_id 5 for calling the ColumnMatcher obj's underlying member method code with example usage: obj.reset() without return types